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July 10, 1928. 1,676,913

J. NORTHROP FEELER LOOM Filed April 50, 1927 Sheets-Sheet 1 WI'LQSS July 10, 1928. 1,676,913

J. NORTHROP FEELER LOOM Filed April 50, 1927 5 Sheets-Sheet 2 2%-; 1314 J \j w July 10, 1928. 1,676,913

J. NORTH ROP FEELER'LOOM FiledApril 30, 1927 3 Sheets-Sheet 3 are'front views. of a. portion of the left-,

I, view similar to that ofFig.

Patented July 10, 1928 warren STATES JONAS NORTHROP, OF HOPEDALE, MASSACHUSETTS, ASSIGNOILjBY MESNE ASSIGN- MEN'iS, TO DRAPER CORPORATION, OF TION OF MAINE.

HOPEDALE. MASSACHUSETTS, A CORPORA- FEELER LOOM.

Application filed April 30,

The present invention relates to feeler loon'is. andmore particularly to mechanism for'controllingthe operation of such looms by the filling feeler.

Feeler looms arecontrolled in their operation by the amount of filling on the bobbin in the shuttle; in some feeler looms the'approaching exhaustion of the filling causes weftrcplenishment, and in others it causes stopping of the 100111 to enable the operative to replenish the supply of weft. The illustrated en'rbodiment of the present invention is a loom which is'provided with mechanism for stopping it in anticipation of complete exhaustion so that the filling shall not fail before the loom stops. This method of controlling the loom obviates the exhaustion of the filling during the pick. which would necessitate removal of the filling over a part of the width of the cloth being woven, or over the entire width in case the filling extended from the one selvage acrossthe warp --and causes the clutch to' be .closed: The

and beyond the other selvageQbut was ended before itireachcd the shuttle so that the thread was notdrawn into the shed under proper tension'to make perfect cloth. The object of the invention is to improvelooms of this type, and the invention consists in the construction hereinafter described and particularly defined in the claims.

In the accom 'ianying drawings illustrating, thepreferrcd form of th'einvention, Fig. 1 is an end elevation of a'portion of. a loom embodying the present invention; Fig. 2 is a 1 with some parts removed and with the mechanism occupying different-positions; Figs. 3 and 4 hand end of the loom with the parts in differentpositions; Fig. 5 is a view similar to Fig.1 with theparts inldilfer'ent positions; Fig. '6 is a view similar to Fig. 5 with some of the partsremoved for the. sake of clearness; Fig. 7 is a face view of the groove block; and Fig. 8 is a horizontatsection taken on the line"8 8 Fig. 6.

The illustrated embodiment of the invention is described as follows: The loom frame 10 supports the swords 11 carrying the lay 12 operated by the 'p'it'man 13 in the usual manner. The lay shaft 14 is supported in bearings carried by the frame. The bell crank lever 15, pivoted at 16 on the bracket 17, has a rearwardlyextending arm 18 which 1927. SerialNo. 187,817:

operates the clutch to start and stop the loom. The bell crank. lever 15 has a forwardly extending arm .20 connected by "means of the link 21 with the lever 22 pivoted at 23 upon the frame of the machine. A" spring 24 connected to the lower end of the lever 22'normally tends to turn the lever into the position shown in. Fig.- 1.' \Vhen' the lever 22 occupies the position illustratedv in Fig. 1,t-he clutch is open; when it is moved to the left of this position the clutch is closed. The lever 22 is provided at its upper end with a T-slot 25 which receives a, pin 26"secured inthe end-of the shipper lever 27 mounted on the shaft 28 supported in bearings in the frame of the loom. lVhen the shipper lever occupies the position shown in Fig. 1 the'spring24 tends to hold it there. lVhen the lever 27 "is pulled upon by the operative, the pin. 26 swings the lever 22 to the left-hand position lever.3 1, freely pivoted on the shaft 28. i

'The upper end of this bell crank lever carries a roll 33 which is adapted to engage either one or the other of two depressions 34 or 35 in the disk 36, which is formed integral with the brake lever 37, pivoted at 38 on the'frame of the machine. hen the brake; lever is turned to present the recess 34 to the rearwardly and theieby releases the brake; when the roll 33 is received in the recess 35, the brake rod 30 is permitted to move forwardly and the brake is applied. The brake lever 37 is provided with a handle 40 for convenient useby the operator.

The swingjaw 41"is pivotally mounted at {12 on the brake lever 37. This swing jaw IS'IJIOVidGCl to securecooperation between the shipper lever '27 and the brake inechanism, the shipper lever 27 being provided witha pin 43 which enters thespace between the two arms of the swing jaw 41. The width of the opening between the jaws is .such that While the shipper lever is in its clutch-open position, as shown in Fig. 1, the

bell crank roll 33. it forces the brake rod 30 Y the shipper lever forward causes'the pin 43 to move in the arc of a circle forwardly about the pivot 28 as a center until it strikes the forward arm 46 of the swing jaw, and

thereby turnsthe brake lever 37 through the engagement of the projections 44'and 45.

As soon as the roll 33 rides over the rise between the depressions 35 and 34, the pressure of the brake rod 30 on the roll causes it to force the roll 33 into the recess 34, thereby swinging the bell cranklever 31 in the direction to release the brake. The loom is then in running condition with the clutch closed and the brake free. In this position both clutch lever and brake lever are in for ward positions. The stopping of the loom is initiated by moving the brake handle rearwardly. This movement may be performed by the operative and it causes the recess 35 to be presented to the roll 33 of the bell.

crank lever 31, thereby permitting the latter to swing to the left soas thereby to move the brake rod to the right and apply the brake.

After the first portion of the rearward movement of the brake lever 37 is completed, the front jaw l6 of theswing jaw strikes the pin 43 in the clutch lever and moves it rearwardly, thereby permitting the spring 24 to swin the lever 22 in the direction to pull the cutch link 21 forwardly so as thereby to open the clutch. The loom is thus stopped with the clutch open and the v brake applied. a If, now, it is desired to turn the 100m over by hand, the operative will pull upon the brake handle and swing the brake lever forward'and the parts will occupy the position showriin Fig. 1 with the clutch still open and the brake released.

Mechanism is provided controlled by a filling feeler for stopping the loom, and this is secured'by the rearward movement of the brake lever. To this end the loom is provided with a filling feeler adapted to enter the shuttle 51through thehole 52 in the front of the shuttle box to feel of the thread upon the forward beats of the lay when the shuttle is in the box opposite the feeler. The feeler is connected with a feeler rod 53 which extends from the feeler proper to a trip lever 54, pivoted at 55 upon the bracket 56 secured to the loom by the screw 57. The feeler is provided with a spring,

as is usual with many types of feelers, normally acting to exert a pull on the rod 53 tending to move it in the direction of the arrow 58. This spring is prevented in the usual manner from exerting any pull upon the rod 53 at all times except when the tilling feeler 50 is in engagement with the bobbin, and when filling is present the tendency of the sprin: to pull upon the rod is prevented by the filling. In the absence of filling, however, the spring exerts its pull upon the rod and moves it in the direction of the arrow 58, thereby swinging the lever 54 from the position shown in Fig. 3 to the position shown in Fig. 4. The lower end of the trip lever 54 is provided on its lefthand face with a projection 60. This projection 60 is adapted to engage a projection 61 on the bell crank or hunter lever 62. The parts are cutaway in Fig. 6 to show the shape of this hunter lever 62, which is pivoted at 63 on the brake lever 37. \Vhenthe loom is running, the projection 61 of the hunter lever 62 is supported by the projection 60 of the trip lever 54.. Vhen critical exhaustion is indicated, the rod 53 is pulled upon to swing the lever to the position shown in Fig. 4 as described. A stop pin 64 is provided on the bracket 56 to prevent the trip lever 54 from swinging to the right far enough to interfere with the operation of the brake lever 37.

The left-hand end of the hunter lever 62 is of such a weight that, it tends to turn the.

lever on its pivotal support from the posi' tion shown in Fig. 1 to the position shown in Fig. 5. The lower end of the depending arm of the hunter lever 62 is provided with a widened portion 65, which-on its right side, as viewed in Fig. 4,. rests against the surface 66 of the bracket 67, bolted at 68 to the frameof the machine. carries at its lowerend two arms 70 and 71, in which is supported the'shaft '72. Pivotally mounted'on this shaft is a groove block 73, having upwardly extended arms 74'and 75. A spring 76 engages the pin 77 at one end and the arm 71 of the bracket at its other end, and normallytends to turn the groove block in the direction'to cause it. to

move to the right, as viewed in Figs- 3. and 4.

Thiscauses the arm 74 to be pressedagainst the widened end of the hunter lever 62 when the latter occupiesthe position shown in Fig.1 When the hunter lever 62 turns from the position shown in Fig. 1 tothe position shown in'F-ig. 5, the grooveblock Ell Inn

This bracket swings to the right from the position'sliown in Fig. 3 to the position shown in Fig. 4.

.This movement of the groove block is for thepurpose of bringing it into engagement with a reciprocating part in orderto cause the latter to be moved into position to en-' gage the widened end of the hunter lever 62. This reciprocating part is the hunter 78 mounted on the hunter carrier 80, which in turn is secured by the set screw- 81 to the upper end of a reciprocating rod 82. This rod is secured at its lower end in the block 83, pivotally mounted at 84 on the arm"85 secured on the lay shaft 14 by means of the set screw 86. The rod 82 is thus moved up and down with the movements of the lay. As the lay moves forwardly the rod lowers, and as the lay moves rearwardly the rod rises.

The hunter carrier is provided with a laterally projecting tooth 87 (see Fig. 8), which is adapted to engage a groove formed in the adjacent surface of the groove block 75. The bunter carrier 80 and the'rod 82, being pivoted at 84 upon the arm 85 secured to the lay shaft 14 and extended slightly forwardly beyond the pivot S-l, tend normally to swing by gravity to the position occupied in Figs. 1, 2 and 5. \Vhen the groove block is permitted, however, to move to the right, as viewed in Fig. 3, the tooth 87 engages the groove 88 in the groove blOt'k at the right-hand end of the groove as the groove block is viewed in Figs. 5, t3 and 8, and at the left-hand end ot'the groove as viewed in Fig. 7, at a point. in the neighborhood of the place indicated by the reference character 9t). Assume that the tooth eugages the groove at the point we, upon the next upward movement of the tooth 87 it moves upward in the groove to the point 91. At J2, however, there is a ledge in the groove, so that when the tooth moves downwardly again it cannot return to the point 90 and is obliged to move down through the portion of the groove at 93 and drop ofl' the ledge at 94, thereby finding itself in the lower portion of the groove 95. Successive reciprocations of the hunter carrier thereby advance the banter toward the left from the position shown in Fig. 5 to the position indicated in Fig. 6, the path of movement of the tooth of the bunter carrier being along a saw-tooth.path upward on one im-line, downward on the next incline and repeat, thereby bringing thebunter below the lower end of the bunter lever 62, as shown in Fig. 6, whereupon, .on the next upward movement, the hunter will strike the lower end of the hunter lever 62 and force it bodily upward, thereby transmitting a force to the brake lever 37 which will cause it to move from ins forward position toward its rear position, that it is to say, from the position shown in Fig. 6 to a position substantially that shown in Fig. 2. Be tore the brake lever reaches the position in Fig. 2,howevcr, the hunter lever 62 will be free from the hunter and will tend to turn to the position shown in Fig. 2. but it will not reach that position until the groove block is lifted off the tooth ot the hunter carrier. The hunter lever (52 will be held from swinging to the position shown in Fig. 2 by the engagement of its widened lower end with the inwardly curved arm 75, which, as shown in Fig. at, prevents the bunter lever 62 't'rom swinging beyond engagement with such arm. So it is that the hunter lever 62 is held from tipping to the position shown in Fig- 2 until the groove block is moved away or lit'ted so as to permit such movement. The operative will now replenish the supply of filling in the shuttle and then start the loom again. This forward movement of the brake lever will cause the return of the hunter lever-(32 to the position shown in Fig. 1, thus automatically lifting the groove block off of the widened lower end of the lever, and at the same time freeing the hunter carrier, which will move back to its right-hand position, as shown in Fig. 1.

This apparatus is particularly intended to delay the stopping of the loom after approximate exhaustion of the filling in the bobbin three picks, so that indication of approaching exhaustion is given while there is still sufiicient string on the bobbin for three picks of the shuttle across the loom, and thereupon the loom stops.

The invention is adapted for use in connection with a fillin supply loom wherein lilting replenishment is indicated a certain number of picks prior to actual replenishment, and so it will be understood that some ol' the claims are to be read and understood as generic to changing the operation of the loom, whether by stopping it or by wet't replenishment.

More specifically the invention contemplates a teeler loom stop mechanism having provision for stopping the loom a certain number of picks after tilting exhaustion is indicated.

Having thus describ'ed the invention, what is claimed is:

l. A feeler loom having, in combination, a lay, a shuttle, a feeler mounted to enter the shuttle and detect the condition of the filling, a trip lever connected with the filling feeler. a shipper lever for starting and stopping the application of power to the loom, a brake lever for applying a braking force to the loom, connections between the shipper lever and the brake lever having provision for throwing off the brake when the shipper lever is moved to starting position, and for throwing oft the shipper lever when the brake is applied. and delay-action means under the control of said trip lever for applying the brake and shifting the shipper to disconnect the power.

2. A feeler loom having, in combination. a lay, a shuttle, a feeler mounted to enter the shuttle and detect the condition of the filling, shipper mechanism, brake mechanism. a reciprocating hunter. and connections between the brake mechanism, the shipper mechanism and the feeler constructed to operate automatically rpon the exhaustion of the filling to a predetermined point to bring the reciprocating hunter and the part connected with the brake mechanism into operative relation so that thereby, after tilling exhaustion is finally indicated, the brake will be applied, the shipper thrown to disconnect the power, and the loom will he stop ed. i

3. A filling feeler loom having, in combination, a lay, a shuttle, a filling feeler mounted to enter the shuttle and detect the condition of the filling, loom controlling means, a reciprocating hunter, and connections between the filling feeler, the loom controlling means and the hunter acting automatically upon the exhaustion of the filling to a predetermined point to cause a part of the loom controlling means to strike and move the hunter along its reciprocatory path sufiiciently to cause a change in the operation of the loom.

4. A loom having, in combination, a lay, a shuttle, a feeler for feeling of the filling in the shuttle, loom controlling means, and a hunter normally reciprocating in a certain path of motion, the loom controlling means aving provision upon the predetermined exhaustion of filling in the shuttle to engage the hunter and move it stop by step from an inoperative position to an operative position with respect to th loom controlling means so as thereby to ca se operation of the latter at a predetermined interval after filling exhaustion is indicated.

5. A loom having, in combination, a shipper lever, a filling detector, shipper operating devices comprising a groove block normally held by the shipper operating devices out of operation, and a reciprocating hunter providedwith a tooth adapted to engage a groove in the groove block and to be itself moved thereby upon indication of filling exhaustion to cause delayed stopping of the loom.

latter comprising 6. A loom having, in combination, a bunter, a device adapted to be engaged by the hunter for causing a change in the operation of the loom, and means for movi g the hunter comprising a groove block and adapted to engage a part connected with the hunter to move the latter laterally to cause actuation of the loom controlling means.

7. A feeler loom having, in combination, a lay, a shuttle, a filling feeler, loom con trolling means, a device for operating the two parts, a hunter, and a hunter moving device the one being provided with a tooth and the other with a groove, reciprocations of the hunter causing the movement of one into position to cause actuation oil the loom controlling device by the hunter.

8. A feeler loom having, in combination,

a lay, a shuttle, a filling feeler for feelingof the filling in the bobbin, loom controlling devices adapted to be actuated to cause a change in the operation ot the loom, mechanism for actuating the loom controlling devices comprising a reciprocating hunter having a tooth, and a pivoted groove block normall y held out of engagement with the tooth, the loom controlling devices having provision under the control of the feelerfor permitting the groove block to engage the tooth, the groove block being provided with a saw-tooti groove acting upon reciprocations of the hunter to cause the latter to move laterally into'position to operate the loom controlling devices. l

9. A t'eeler loom having, in combination, a lay, a shuttle, a filling feeler, shipper mechanism comprising a shipper lever, and brake mechanism comprising a brake lever, the brake lever being provided with a swing jaw pivotally mounted upon the brake lever for rocking movement thereupon and the shipper lever being provided with a pin located between the arms of the swing jaw to engage said arms so that a movement of the shipper lever to start the loom will release the brake, and so that movementof the brake lever to apply the brake will operate the shipper lever to disconnect the power.

10. A 'feeler loom having, in combination, a lay, a shuttle, a filling feeler, a brake lever, a hunter lever on the brake level-,a trip lever connected with the filling feeler and adapted to cooperate with the hunter lever on the brake lever to supportthe hunter lever in operating position, a reciprocating hunter having a normal path of movement out of register with the hunter lever and provided with a tooth, a groove block provided with a groove normally held out of engagement with the tooth on the hunter by the hunter lever constructed and arranged so that predetermined exhaustion of filling causes a movement of the trip lever which thereby frees the hunter lever and permits the latter to move, and in turn releases the groove block and causes it to enga e the tooth on the hunter, which is therc by, during the next few reciprocations thereafter, caused to move into engagement with the hunter lever which is thereby actuated, shipper mechanism, brake mechanism. and connections between the hunter lever and the shipper and brake mechanism to cause the throwing of the shipper and the application of the brake to stop the loom.

11. A feeler loom having, in combination, a lay, a shuttle, a filling feeler, a trip' lever connected with the filling feeler, a brake lever, a hunter lever pivotally mounted on the brake lever and having a part adapted to be held in a certain position by the trip lever, a swing jaw pivotally mounted on the brake lever, a shipper lever having a pin adapted,

to be received in the opening of the swing jaw, brake mechanism, and means carried by the brake lever for actuating the brake mechanism.

12. A device for use onlooms for delaying an indicated operation having, in combination, a reciprocating part provided with a tooth, a groove block provided with a groove adapted to cooperate with the tooth, means for holding the groove block out of engagement with the tooth of the reciprocating part having provision, upon indication of a change in loom operation being required, to move in a direction to permit the movement of the groove block into engagement with the tooth of the reciprocating part, and the groove block acting to move the reciprocating part laterally upon each reciprocation of the part.

13. A loom having, in combination, loom controlling means,a reciprocating part for changing the operation of the loom through the intervention of the loom controlling means comprising a reciprocating part and a groove b ock, the reciprocating part and the groove block being provided, the one with a tooth and the other with a groove, means for causing the parts to be engaged upon the indication of a change being required in the operation of the loom acting to move one of the parts laterally with respect to the other so as thereby to bring the reciprocating part into position to initiate operation of the loom controlling mechanism.

14. A device for use on feeler looms having feelcr and loom controlling devices comprising a reciprocating part and a block, the block and reciprocating part having, the one a groove and the other a cooperating tooth normally held from cooperation but permitted to cooperate upon the indication of a change in the operation of the loom being required, having provision for moving laterally one of the two cooperating memhers to bring a part into position to cause initiation of the operation of the loom controlling mechanism. a

15. A loom having in combination, a lay, a filling detector, loom controlling means, and a delay action device for said controlling means and under the control of the filling detector, including a reciprocating part having a projecting tooth, a block having asaw tooth groove adapted to receive said tooth and formed to permit progress of the tooth through said groove in one direction only with the movement of the reciprocating part. 1

In testimony whereof I have signed my name to this specification.

JONAS NORTHROP. I 

